<!DOCTYPE html>
<html lang="en">
<head>
    <meta charset="UTF-8">
    <meta http-equiv="X-UA-Compatible" content="IE=edge">
    <meta name="viewport" content="width=device-width, initial-scale=1.0">
    <title>Document</title>
</head>
<body>
    <script>
        const arr = [
            { name: 'zhangsan'},
            { name: 'lisi'},
            { name: 'wangwu'},
        ];
        const arr1 = arr.concat();
        // arr1[0].name = 'zhangsan1';
        // console.log(arr[0].name);
        arr1[0] = {
            name: 'zhangsan2',
        };
        console.log(arr[0].name);
    </script>
</body>
</html>